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Based on the homemade fiber laser, the error origin, resolution, and applicable range of delayed self-heterodyne interferometry (DSHI), self-correlation envelope linewidth detection (SCELD) and Voigt fitting are investigated numerically and experimentally. The selection of the linewidth measuring method should meet the following conclusions: an approximately Lorentzian self-heterodyne spectrum without the pedestal and high-intensity sinusoidal jitter is a prerequisite for DSHI; the SCELD needs a suitable length of delay fiber for eliminating flicker noise and dark noise of the electrical spectrum analyzer; a non-Lorentzian self-heterodyne spectrum without a pedestal is an indispensable element for Voigt fitting. According to the experimental results, the laser Lorentzian linewidth of SIL changes from 1.7 kHz to 587 Hz under different injection powers. When the Brillouin erbium fiber laser is utilized, the Lorentzian linewidth is measured to be 60 \u00b1 5 Hz.<\/jats:p>","DOI":"10.3390\/s23010122","type":"journal-article","created":{"date-parts":[[2022,12,23]],"date-time":"2022-12-23T02:36:46Z","timestamp":1671763006000},"page":"122","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["Comparison of Different Linewidth Measuring Methods for Narrow Linewidth Laser"],"prefix":"10.3390","volume":"23","author":[{"given":"Ziqi","family":"Zheng","sequence":"first","affiliation":[{"name":"Department of Optical Engineering, School of Physics, Hefei University of Technology, Feicui Road 420, Hefei 230601, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Qiaoxia","family":"Luo","sequence":"additional","affiliation":[{"name":"Department of Optical Engineering, School of Physics, Hefei University of Technology, Feicui Road 420, Hefei 230601, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xian","family":"Wang","sequence":"additional","affiliation":[{"name":"Department of Optical Engineering, School of Physics, Hefei University of Technology, Feicui Road 420, Hefei 230601, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiaohui","family":"Ma","sequence":"additional","affiliation":[{"name":"Department of Optical Engineering, School of Physics, Hefei University of Technology, Feicui Road 420, Hefei 230601, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wei","family":"Zhang","sequence":"additional","affiliation":[{"name":"Department of Optical Engineering, School of Physics, Hefei University of Technology, Feicui Road 420, Hefei 230601, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wentan","family":"Fang","sequence":"additional","affiliation":[{"name":"Department of Optical Engineering, School of Physics, Hefei University of Technology, Feicui Road 420, Hefei 230601, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiaolin","family":"Chen","sequence":"additional","affiliation":[{"name":"Department of Optical Engineering, School of Physics, Hefei University of Technology, Feicui Road 420, Hefei 230601, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9407-7169","authenticated-orcid":false,"given":"Song","family":"Huang","sequence":"additional","affiliation":[{"name":"Department of Optical Engineering, School of Physics, Hefei University of Technology, Feicui Road 420, Hefei 230601, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yong","family":"Zhou","sequence":"additional","affiliation":[{"name":"Department of Optical Engineering, School of Physics, Hefei University of Technology, Feicui Road 420, Hefei 230601, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Weiqing","family":"Gao","sequence":"additional","affiliation":[{"name":"Department of Optical Engineering, School of Physics, Hefei University of Technology, Feicui Road 420, Hefei 230601, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2022,12,23]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"2939","DOI":"10.1364\/OL.34.002939","article-title":"Coherent beam combination of three two-tone fiber amplifiers using stochastic parallel gradient descent algorithm","volume":"34","author":"Zhou","year":"2009","journal-title":"Opt. Lett."},{"key":"ref_2","doi-asserted-by":"crossref","unstructured":"Coddington, I., Lorini, L., Swann, W.C., Bergquist, J.C., Coq, Y.L., Oates, C.W., Quraishi, Q., Stalnaker, J., Diddams, S.A., and Newbury, N.R. (2007, January 6\u201311). Multi-Octave Optical Coherence Spanning Hundreds of Meters. Proceedings of the 2007 Conference on Lasers and Electro-Optics (CLEO), Baltimore, MD, USA.","DOI":"10.1109\/CLEO.2007.4452579"},{"key":"ref_3","doi-asserted-by":"crossref","unstructured":"Feng, Z.Y., Cheng, Y., Chen, M., Yuan, L.B., Hong, D., and Li, L.T. (2022). Temperature-Compensated Multi-Point Strain Sensing Based on Cascaded FBG and Optical FMCW Interferometry. Sensors, 22.","DOI":"10.3390\/s22113970"},{"key":"ref_4","doi-asserted-by":"crossref","unstructured":"Petrov, N., and Pustovoit, V. (2021). Small-Sized Interferometer with Fabry-Perot Resonators for Gravitational Wave Detection. Sensors, 21.","DOI":"10.3390\/s21051877"},{"key":"ref_5","doi-asserted-by":"crossref","unstructured":"Shi, L., Tao, Z., Qian, H., and Huang, S. (2014, January 2). Effect of Laser Linewidth on Phase-OTDR Based Distributed Vibration Sensing Regime. Proceedings of the International Conference on Optical Fibre Sensors, Santander, Spain.","DOI":"10.1117\/12.2059448"},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"1827","DOI":"10.1109\/LPT.2005.853258","article-title":"Narrow linewidth fiber laser for 100-km optical frequency domain reflectometry","volume":"17","author":"Geng","year":"2005","journal-title":"IEEE Photonics Technol. Lett."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"082703","DOI":"10.7567\/APEX.8.082703","article-title":"Compact slow-light single-frequency fiber laser at 1550 nm","volume":"8","author":"Mo","year":"2015","journal-title":"Appl. Phys. Express"},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"79","DOI":"10.1119\/1.1286663","article-title":"An introduction to Pound-Drever-Hall laser frequency stabilization","volume":"69","author":"Black","year":"2001","journal-title":"Am. J. Phys."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"1980","DOI":"10.1364\/OL.39.001980","article-title":"Reduction of residual amplitude modulation to 1 \u00d7 10\u22126 for frequency modulation and laser stabilization","volume":"39","author":"Zhang","year":"2014","journal-title":"Opt. Lett."},{"key":"ref_10","doi-asserted-by":"crossref","unstructured":"Yang, R.T., Lv, H.S., Luo, J., Hu, P.C., Yang, H.X., Fu, H.J., and Tan, J.B. (2020). Ultrastable Offset-Locking Continuous Wave Laser to a Frequency Comb with a Compound Control Method for Precision Interferometry. Sensors, 20.","DOI":"10.3390\/s20051248"},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"1397","DOI":"10.1364\/OL.415859","article-title":"Narrow-linewidth self-injection locked diode laser with a high-Q fiber Fabry-Perot resonator","volume":"46","author":"Hao","year":"2021","journal-title":"Opt. Lett."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"1185","DOI":"10.1038\/s41598-017-01351-w","article-title":"Dual-cavity feedback assisted DFB narrow linewidth laser","volume":"7","author":"Huang","year":"2017","journal-title":"Sci. Rep."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"1655","DOI":"10.1109\/JLT.1986.1074666","article-title":"Regimes of feedback effects in 1.5-\u00b5m distributed feedback lasers","volume":"4","author":"Tkach","year":"1986","journal-title":"J. Light. Technol."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"5286","DOI":"10.1364\/OL.42.005286","article-title":"Tens of hertz narrow-linewidth laser based on stimulated Brillouin and Rayleigh scattering","volume":"42","author":"Huang","year":"2017","journal-title":"Opt. Lett."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"1980","DOI":"10.1109\/JLT.2013.2263297","article-title":"Low-Threshold, Single-Mode, Compact Brillouin\/Erbium Fiber Ring Laser","volume":"31","author":"Chen","year":"2013","journal-title":"J. Light. Technol."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"5055","DOI":"10.1364\/AO.48.005055","article-title":"Optimization of output coupling ratio on the performance of a ring-cavity Brillouin-erbium fiber laser","volume":"48","author":"Hambali","year":"2009","journal-title":"Appl. Opt."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"4801","DOI":"10.1364\/AO.49.004801","article-title":"Simple approach to the relation between laser frequency noise and laser line shape","volume":"49","author":"Schilt","year":"2010","journal-title":"Appl. Opt."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"22386","DOI":"10.1364\/OE.23.022386","article-title":"Laser phase and frequency noise measurement by Michelson interferometer composed of a 3 \u00d7 3 optical fiber coupler","volume":"23","author":"Xu","year":"2015","journal-title":"Opt. Express"},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"630","DOI":"10.1049\/el:19800437","article-title":"Novel method for high resolution measurement of laser output spectrum","volume":"16","author":"Okoshi","year":"1980","journal-title":"Electron. Lett."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"41988","DOI":"10.1038\/srep41988","article-title":"Precise measurement of ultra-narrow laser linewidths using the strong coherent envelope","volume":"7","author":"Huang","year":"2017","journal-title":"Sci. Rep."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"6803","DOI":"10.1364\/OE.23.006803","article-title":"Ultra-narrow linewidth measurement based on Voigt profile fitting","volume":"23","author":"Chen","year":"2015","journal-title":"Opt. Express"},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"485","DOI":"10.1109\/50.76663","article-title":"1\/f frequency noise effects on self-heterodyne linewidth measurements","volume":"9","author":"Mercer","year":"1991","journal-title":"J. Light. Technol."},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"2070","DOI":"10.1109\/JQE.1986.1072909","article-title":"Linewidth determination from self-heterodyne measurements with subcoherence delay times","volume":"22","author":"Richter","year":"1986","journal-title":"IEEE J. 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